Go 打印出结构化结构体

package main
import (
	   "fmt"
	    "github.com/jinzhu/gorm"
	    "github.com/sirupsen/logrus"
        _ "github.com/jinzhu/gorm/dialects/sqlite"
        "encoding/json"

)

type Product struct {
	gorm.Model
	Code string
	Price uint
}

func main() {
	fmt.Println("in main")
	db,err :=gorm.Open("sqlite3","test.db")
	if err!=nil{
		panic("数据库连接失败")
	}
	defer db.Close()
	//创建
	db.AutoMigrate(&Product{})
    product:=&Product{Code: "L123",Price:1000}

    json_p,err:= json.Marshal(product)
        if err != nil {
    }
    logrus.Infof("json_p %v",string(json_p))

	db.First(product,1)
	db.First(product,"code = ?","L123")
	db.Model(product).Update("Price",3000)
	db.Delete(product)
}